Farah, D., Zaibunnisa, A.H, Z.A. and Jati, M. 1. Optimization of cocoa nib roasting based on sensory properties and colour using response surface methodology. Pelita Perkebunan (a Coffee and Cocoa Research Journal). 28, 1 (1), 45-54. DOI:https://doi.org/10.22302/iccri.jur.pelitaperkebunan.v28i1.163.